English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The Dead Sea is an excellent natural laboratory for theinvestigation of Reactive Bromine Species (RBS) chemistry, due to the highRBS levels observed in this area, combined with anthropogenic air pollutantsup to several ppb. The present study investigated the basic chemicalmechanism of RBS at the Dead Sea using a numerical one-dimensional chemicalmodel. Simulations were based on data obtained from comprehensivemeasurements performed at sites along the Dead Sea. The simulations showedthat the high BrO levels measured frequently at the Dead Sea could onlypartially be attributed to the highly concentrated Br− present in theDead Sea water. Furthermore, the RBS activity at the Dead Sea cannot solelybe explained by a pure gas phase mechanism. This paper presents a chemicalmechanism which can account for the observed chemical activity at the DeadSea, with the addition of only two heterogeneous processes: the "BromineExplosion" mechanism and the heterogeneous decomposition of BrONO2.Ozone frequently dropped below a threshold value of ~1 to 2 ppbv atthe Dead Sea evaporation ponds, and in such cases, O3 became a limitingfactor for the production of BrOx (BrO+Br). The entrainment of O3fluxes into the evaporation ponds was found to be essential for thecontinuation of RBS activity, and to be the main reason for the jaggeddiurnal pattern of BrO observed in the Dead Sea area, and for the positivecorrelation observed between BrO and O3 at low O3 concentrations.The present study has shown that the heterogeneous decomposition ofBrONO2 has a great potential to affect the RBS activity in areasinfluenced by anthropogenic emissions, mainly due to the positivecorrelation between the rate of this process and the levels of NO2.Further investigation of the influence of the decomposition of BrONO2may be especially important in understanding the RBS activity atmid-latitudes

Measurement-based modeling of bromine chemistry in the boundary layer: 1. Bromine chemistry at the Dead Sea